I recently bought one of these well made internal mics, however earlier in its life some gorilla has broken the thread off the handle and over tightened the retainer screw.
I have managed to grind the end off the retainer screw and get it out , however I have no means of determining the original threads used one either of these as one is missing and the other is too badly mutiliated to measure with any certainty.
Does anyone have a lead to the pitch of these threads as I would like to restore this instrument and use it in the shop.
Michael